Furnace



LEOSJM May 19, 1931.

c. B. PAGE FURNACE Filed June 21, 1929 2 Sheets-Sheet l M ax/47 fwenor Charles B. Pa

Az'tys.

May 19, 1931.

C. B. PAGE FURNACE Filed June 21, 1929 2 Sheets-heet 2' Imja/'dor Charles E. Page. gww

' Afty.

?atentati May l9, 1931 n' states imani CHARLE'S B. PAGE, on nvensteoit, ELLEHOES, nsseion., BY ESNE' ASSIGNMENT& To:

THE G. W. DULANY TRUST, 01 C-ICAGQILL-IIOIS,

A COMMON-LAW T UST:

FURNAC'E 'Application fiiedfrune 21,

The present invention relates to improvements in furnaces, particularly furnaces using gaseousfuel and adapted for the heating'of boilers and water heaters.

lt is well known that artificial or natural gas burns with a blue fiame whensuflicient air for complete combustion is supplied.- It is also known .that whengas and' air are mixed in the proper proportion previous to delivery to the burners, the most efiicient utilization of the heat generated can be ob tained because there is then no excess air to be heated. Under the condition of properly premixed gas and air the fiame is only slightly luminous and therefore does not emit any appreciable amount of radiant energy. i

Modern boiler design is based on the high-V est possible utilization of radiant energ '20 and it is well known that the trenendous Capacity of boilers of the internally fired type is due to the heat transfer Capacity of the fire box-some or of the total heat being transferred by radiant energy.

The transfer of heat from a highly heated' gas which is not luminous can only be acconplished by bringingthe gas in contact' with the surface'tobe heated. But if the rate of heat transfer is to be high, then the 0 gas must be brought rapidly in contact with the surface and quickly replaced by other hot gas as it cools. This requires a high velocity and turbulence of the gas. i

The present invention has for its object to provide a highly radiant fire box for gas fired furnaces and boilers. i

Another object of this invention resides in the provision of novel means for creating a violent turbulence and niixture of gases within a furnace.

Further objects and advantages will become apparent :is the description preceeds.

In the accompanying drawings Fig. 1 is a vertical section through a boiler having' a furnace embodying features of my inventiongand the section is .ta-ken along line 1-1 of Fig. 2.

Fig. 2 is a horizontal section taken through Fig. 1 along line 2- 2 While the invention is suseeptible of Vari- `mounted upon suitable supports 21.

1929; Serial No.`372,605.

tions, I have shown in the drawngs` and will herein' describe '111 detal. the preferred em- `bodiment, but it isto' be understood that I donot thereby intend to limit the invention to the specific form disclosed, but intend to cover all modifications and alternative constructions falling within the spirit and scope ofthe invention as expressed in the append.- v

ed ela-inis. i l Referring more partcularlyto the ,draw

ings, T have shown a vertical tubular boiler',

10 mounted upon the furnace structurei The furnace structure lS containedwithin a casng and in the presentinstance this casin'g provide means for fastening adjacent seetors together, each sector s provided ateach r end with' flanges 15.7 The adjacent sectors areheld together by means of boltsl which pass through openings in the flanges.

Eachsector is also provided' with a .top flange 17 upon which the boiler is niounted, i The bottom Wall 18 of eachsector has a step 197 at the inside edge which carries a* circular center plate 20. 'The entirecasing is- In the present instance eachsector has' twoindented fiat surfaced recesses 22, There is an opening through each recess into which burners 23 are inserted at right angles to the fiat surface of the recess. ,The burners are held in place by clamps 24 and bolts 25. The recesses andburners are positioned in suchamanner that the burnersaredirectedslightlyupward and also at an angle to 'radial linesfron the center of the furnace, all Vburners beinginclined in the samej direction. nthis waythe gases aregiven an upward and circularv motion. i v The casing is lined with a heatinsulating' material 26 inside the side and bottom walls ous modifications and alternative construcismade circular to conform to the shape of the water leg of the boiler used in illustratmo i and an inner lining of refractory material v `27. This refractory lining at the side wall extends substantially above the top Wall of the casing and intothe inner shell 'ofthe boiler. In this Way considerable extra sur- 'face for radiant heat is obtained. 'The heat insulating lining and-the refractory lining have openings or tunnels 'for the burners. The burners do not eXtend completely through the tunnels in the refractory lining but end substantially within the inner end of the tunnel. This ives a Ver effective i 'nition surface for maintaining combustion of the" fuel within the tunnel and results in almost complete combustion oi' the fuel within the tunnel, combustionbeing fully completed as the gases pass intothe combustion chamber 2& i

The b-urners are connected to'a fuel 'manii ;told 29 by means of pipe connections 30 and this manifold receives fuel through an inlet connection 31. In the present instance this 'fuel comprises a mixture otgas and air in the, proper proportions supplied under a pressure. i

A pilot burner 32 is inserted through` the side wall of one of the sectors. Thispilot burner receives its supply of gas and air from a separate source than that which supplies themain burners.`

The floor of the combustionchamber 28 is covered With lumps of refractory materal 33 which may consist of broken up fire brick. This aids considerably in converting some of the heat of the gases into radiantenergy and further aids in the distribution of the radiant energy to the croWn sheet 34 and fire box walls 35 of the boiler 10.

I claim as my invention:

i 1. A furnace comprsing, in combination,

'a circular easing having side and bottom walls and an inwardly extending fiange at the top, heat insulating material lini-ng the casing at the sides material inside of saidheat insulating lining at the sides and bottom, said ref'actory material extending substantially above said in- Wardly extencling flange,` a plurality of openings through said side Wall and linngs,said openings being inclined inwardly and upwardly and also inclined in thesame direction to the radii of said casing, and a burner in 'each of saidopenings.

2. Aurnace comprsing, in combination, i a vertical cylindrical casing open at the top, refractory material lining he bottom and, peripheral walls of said'casing; said periphv eral lining extending substantially above the top of said casing, through said peripheral wall and lining, said being inclined -invvardly and upopenngs i wardly and also inchned n the same direction to the radii of said casingiand a burner in each'of said openings. y

3. The combination With a' vertical tubular afxed my signature.

and bottom, ref-raetoryj a plurality of openings boiler'having an annular depending Water leg, of a cylindrica-l casing supporting said boiler said casing comprising a plurality of radial sectors, each sector having a fiange at the top, said flange eeing equal in Width to the thiclrness of said Water leg, each'sector also having a bottom fiange and side fianges,

said ,side flanges extending from saidtop fiange to said bottomflange a bottom plate supported on said bottom fianges' andfclosing the bottom of said casing, a refractory lining at the bottom and side of saidcasing, the side lining extending substantially above the top 'of said casing and into the inner space defined by said Water 1eg,'a plurality' of perpheral openings through said casing and lining, said openings being inclined inwardl and upwardly and also inclined in -the same direction to the radii of said casing,

CHARLES B. AGE. 

